Abstract
Polymer-modified mortars using three types of polymer dispersions are prepared with various polymer-cement ratios, and the effects of ambient temperature, relative humidity and carbon dioxide exposure period oh their accelerated carbonation are examined. Regardless of the temperature and relative humidity, there is a close correlation between their carbonation depth and exposure period, which is approximated by carbonation depth - (time)^<1/2> expression. The carbonation depth decreases with increasing polymer-cement ratio irrespective of the temperature and relative humidity. Their carbonation rate coefficient can be predicted as a function of the temperature, relative humidity and polymer-cement ratio.
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